mame help

i get the rom marvel vs capcom and have all the files needed shown in the mini audit but it doesnt work

I get to the screen to move the left then right then flashes in-between a blue and purple screen with a caption on the bottom "layer 401e contact mamedev"

That indicates that the game isn't fully emulated yet.
You'll have to wait for mamedev to get around to fixing it... some day.